Portable riveting hammer



H. G. WESTIVIORE.

PORTABLE RIVETING HAMMER.

APPLICATION FILED MAR, 29, 1920.

Patented Oct. 24, 1922.

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WITNESS Patented @et Zei, 11922..

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HALWARD G.IWESTMORE, OF' MILWAUKEE, WISCONSIN, ASSIGNOR TO O. SMITH CORPORATION, Ol MILWAUKEE, WISCONSIN, A CORPORATION F NEW YORK.

PORTABLE Riverina Hamann" Application led March 29, 1920. Serial No. 369,472.

v To all whom t may concern: i

'Be it known that I, HALWARD G. WEST- MoRE, a citizen of the United States, and resident of the city of Milwaukee, county of Milwaukee, and State Aofl Wisconsin, have invented a certain new and useful Improvementin Portable Riveting Hammers; and I do declare the following to be a full, clear, and` exact description thereof, such as will enable persons skilled in the art to which the invention pertains to make and use the,

same, reference being had'to the accompanying drawings, as showing one construction in which my invention has-been embodied. The#I invention relates to power actuated portable riveting hammers or devices.l

The invention resides in a construction embodying a casing which supports the anvil in a position of longitudinal adjustment with reference to the hammer. In the form illustrated the invention has-been constructled so as to be operated by compressed air.

The casing referred to also supports the 'riveting hammer and the cylinder in which tingencies. The invention further com prises means for retracting the hammer to lts rearmost position immediately upon relaxation of the air pressure, so that the de' vice may be changed from one position'to another without interference or obstruction by the hammer moving from its normal retracted position.

The invention also comprises means for suspending the riveting device for operation either in vertical or horizontal position,with provision for immediate change of the device from one position tothe other.

The novel features of the invention will be pointed out in the appended claims.

In the drawings accompanying this specification,

Figure 1 is a View in elevation showing my improved .rivetin hammer in position for spreading vertica ly placed rivets, this view lshowing also, in dotted lines', the relative arrangement of the riveting hammer when shifted into position for spreading horizontally extending rivets.

Flg 2'4 is a sectional view through the rlvtlng device on the line 2 2, looking in the direction of the arrow, but omitting the anvil and the cylinder with its'hammer.

The riveting hammer embodying the present invention has been particularly designed for riveting together .the side bars and cross bars, as well as other connecting members, of an automobile or other vehicle frame, the parts-of such frame being formed from sheet metal plates, in a manner well known. In operation, the assemblage of parts constitutlng the automobile frame will be supported at a suitable level, and the rivets designed to unite such 'parts will'be placed in the several openings provided in the frame parts for the reception thereof. The riveting device Will be suspended from an overhead track so as to be in proximity tothe assemblage of frame parts, and may be quickly moved into the several positions with vrespect to the frame where the riveting oper- -ations are to be performed.

justed vwith reference to the stroke of the hammer and to the work to be performed, by means of the jam nuts b1, bearing against the ends of the casing. By moving the jam nuts, on the threaded shank b, the anvil may be gradually adjusted exactly and with pre cision to the position necessary to effect .the most satisfactory results. The face vb2 of the anvil is formed upon a horn b3 extending at a right angle to the shank b, and is positioned axially with referencev to the riveting hammer. `By this arrangement the impact of the blow of the hammer upon the anvil B is provided with a threaded shank f which is passed into the bore a and' adanvil is transmitted in a direct manner to the tion to which it has been adjusted, so that any change of the position thereof by the blows of the hammer is prevented.

, The cylinder for the riveting hammer C4 is seated within the bore a1 of the casing and 1s clamped therein by binding bolts a2 passing transversely through thel casing and,

. illustrated this retractin serving to close the radial slot a3 extend@ from the borealand thus finally hold the said cylinder in its operative position' with respect to the casing and the lhorn of the anvil. The compressed air for operating the hammer C through the usual piston is admitted to the cylinder by means of the duct c, leadingfrom a source of supply.

In order to render the riveting device readily movable from one position Ato another, it is necessary to bring about the immediate retraction of the hammer upon completion of each riveting operation so that there will be neither delay nor interferencein effecting the movement. This re- 4 sult I achieve by connecting a retracting;

spring tothe .riveting hammer, which serves to withdraw the said hammer to its rearmost position immediately upon the relaxation of the operating pressure. In the form l as a band D which encircles the riveting hammer at a oint outside of the casing A,

and is clampe upon the' said rod by means vof a bolt'al1 passing through the extended parallel end portions d10 of the loop D. To

the said extended end portions of the loop D, tension springs d2 are connected, the other ends of such springs being attached to a post d3 extending from the rear end of the casing. In the construction shown the said s rings d? pass through openings d* forme in the connecting horizontal Webs a5 of the casing. In operation, the movement of the hammer C to effect the spreading of the rivet and unite the parts, When the .air is first admitted will overcome the tension and distend the said' springs, without in any Way ali'ecting the eiliciency of the riveting mechanism. As hereinbefore indicated, the ttension of the springs will serve to retract and hold the riveting hammer in its inoperative position when the riveting operation has been completed and the pressure relaxed.

In order to enable the riveting device to `be quickly shifted from vertical to horizontal position, and vice versa, to adapt it to upset. rivets placed in either position2 I provide a b ail connected in fixed relation at one end to the rear of the casing, in the present constructiony to the post 3,

and atthe other end to a lug c* projecting from one side of the casing, viewing Fig. l, in which it will be seen that the said bail extends mainly in the longitudinal direc tion of the casing, The said bail E is bent at e and c1 to form holding notches in which a ring e'-`, encircling the bail, may rest. The holding notches e and e1 are formed in the bail at points with' due regard to the center of gravity and will evenly balance the rivetingI device in either of its positions, and will form supporting bearings upon which the riveting device may be easil) rocked device is shown when desired by the operator to correctly position the same With reference to the work. The chain indicated in Fig. l leads from the ring e2- to the overhead track from which the riveting device is suspended. In traversing the mveting device along the assembled frame the said device maybe instantly shifted -r'om' vertical to horizontal position, and vice versa, to accommodate it to the exigencies ofthe arrangement of the rivets in the frame. v

For convenient manipulation, the rivetin device may be provided with a handlev It will be observed that the anvil B is v'capable of radial adjustment so as to exactly position the face b2 thereof with relation to the riveting hammer.

Having thus described my invention, what I claim and desire to secure by Letters Patent of the United States, is:

1. A portable riveting device comprising a casing, a lhammer and an anvil carrie thereb the latter being longitudinally adjustab e with relation to the stroke of the hammer, means for supporting the device in either vertical or horizontal position, connections for operatin the hammer, and

means for retracting t e hammer to its inoperative position upon completion of the riveting operation.

2. A portable riveting device vcomprising a movable hammer and an anvil, a casin by which thesaid parts are carried, a fixed bail attached to and extending longitudi-A nally of the riveting device, to suspend the device in balanced horizontal or vertical position duringl the riveting operation.

3. A portable riveting device comprisin a casing supporting a movable hammer and an anvil, a bail in fixed relation to the casing, means for suspending the riveting dethe riveting operation, such retracting means being constituted of a tension spring connection between the casing and the hammer.

5, A portable riveting devicecomprising a casing, a hammer movable therein, and an anvil adjustable to and from the hammer and in a plane parallel thereto, the shank of the anvi being seated in the 'casing and held in adjusted positin'b .jam nuts bearing upon opposite ends o the casing.

yl 6. Aportable riveting device comprising a casmg, a' khammer movable therein, an anvil carried by the easing and held against movement under the blows of the hammer, and a fixed bail attached to the casing for suspending the device in a state of balance in its several riveting positions.

In testimony whereof, I have signed my name, at Milwaukee, this 24th day of March, I

. H. G. WESTMORE. Witnesses W. F. WooLARn, A M. DE GELLEKE. 

